package com.itheima.apidemo;

import java.util.Arrays;

/*
数组工具类 Arrays
 */
public class Demo08 {

    public static void main(String[] args) {
        int[] arr = {11, 22, 33, 44, 55};
        //Arrays.toString(数组)

        String s = Arrays.toString(arr);
        System.out.println(s);
    }

    public static String arrayToString(int[] arr) {
        StringBuilder sb = new StringBuilder("[");
        for (int i = 0; i < arr.length; i++) {
            if (i == arr.length - 1) {
                sb.append(arr[i]);
            } else {
                sb.append(arr[i]).append(", ");
            }
        }
        sb.append("]");
        return sb.toString();

    }
}
